irb - command to launch ruby interpreter in any directory
rails c - command lets you interact with your Rails application from the command line
reload! - reload rails environment if you had changed model functionality
gem outdated - show all outdated gems on project
gem update [<gem_name>] - update a specific gem
./bin/webpack-dev-server - start webpacker dev server for fast compiling
code $(bundle show gem_name) - shortcut to open a Ruby gem in VS Code
whoami current user name
hostname current pc name
cat /etc/os-release - info about current system
getent group sudo | cut -d: -f4 - show all sudo users
su - user2 - switch between users
sudo chmod a+rwx folderName/* add all access to the folder
chown -R username directory - add full permission directory and to all files and directories in that directory
chowd -R u+rX directory - the same as previous
| Configuration files for Rails-driven project basic continuous integration using GitHub Actions and GitLab CI. | |
| 2020, amkisko (Andrei Makarov). |
| #!/bin/bash | |
| # License for this script is GNU 2 | |
| # A small bash script to download, compile and install latest wgrib2 from source. | |
| # I have written this script so that I can automate the proceedure whenever I change Linux OS | |
| # Make it executable before running the script using'chmod +x ./wgrib2_auto_compile_script.sh' | |
| # Ensure to run the script with sudo (sudo ./wgrib2_auto_compile_script.sh) or under root environment |
The PATH is an important concept when working on the command line. It's a list
of directories that tell your operating system where to look for programs, so
that you can just write script instead of /home/me/bin/script or
C:\Users\Me\bin\script. But different operating systems have different ways to
add a new directory to it:
- The first step depends which version of Windows you're using:
- If you're using Windows 8 or 10, press the Windows key, then search for and
The first step is to remove older version of PostGIS if any.
sudo apt-get purge postgis
wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | sudo apt-key add -
sudo sh -c 'echo "deb http://apt.postgresql.org/pub/repos/apt/ trusty-pgdg main" >> /etc/apt/sources.list.d/postgresql.list'
| cd /path/to/your/repo | |
| curl https://gist.githubusercontent.com/johnhamelink/577b8613ae82d2b3037b/raw/ad71fb72a1b86ee9a90ac62eccc4a55367578625/pre-push.sh > .git/hooks/pre-push | |
| chmod u+x .git/hooks/pre-push |
| #!/usr/bin/env bash | |
| # MIT © Sindre Sorhus - sindresorhus.com | |
| # git hook to run a command after `git pull` if a specified file was changed | |
| # Run `chmod +x post-merge` to make it executable then put it into `.git/hooks/`. | |
| changed_files="$(git diff-tree -r --name-only --no-commit-id ORIG_HEAD HEAD)" | |
| check_run() { | |
| echo "$changed_files" | grep --quiet "$1" && eval "$2" |
| var colorArray = ['#FF6633', '#FFB399', '#FF33FF', '#FFFF99', '#00B3E6', | |
| '#E6B333', '#3366E6', '#999966', '#99FF99', '#B34D4D', | |
| '#80B300', '#809900', '#E6B3B3', '#6680B3', '#66991A', | |
| '#FF99E6', '#CCFF1A', '#FF1A66', '#E6331A', '#33FFCC', | |
| '#66994D', '#B366CC', '#4D8000', '#B33300', '#CC80CC', | |
| '#66664D', '#991AFF', '#E666FF', '#4DB3FF', '#1AB399', | |
| '#E666B3', '#33991A', '#CC9999', '#B3B31A', '#00E680', | |
| '#4D8066', '#809980', '#E6FF80', '#1AFF33', '#999933', | |
| '#FF3380', '#CCCC00', '#66E64D', '#4D80CC', '#9900B3', | |
| '#E64D66', '#4DB380', '#FF4D4D', '#99E6E6', '#6666FF']; |